Geyser

In October 2013 I bought a geyser at this store,picked up with my bakkie,had the plumber.It worked perfectly well.In January 2015 it was no longer working so I went to the store told them and the salesman named Anele suggested that it could be either a thermostat or the urn that needed replacement, while he was still checking the manager Bonisanani came and asked when it was bought,i told him.He said to me my geyser had a 5 year guarantee and requested me to bring a slip and fortunately this Anele was the one who loaded it when I purchased it,I told the manager that the slip could've been damaged when I had an accident and that the manager (Faku and Anele)who helped when I bought it never mentioned to me that i needed to keep the slip and he never mentioned anything about guarantee otherwise I should have filed a copy had I known.He then promised to sort my problem out.I've been going to them and the assistant manager up to this day nothing has ever happened. I blame them for not advising us as the community and their valued customers in this regard as another customer came as I was speaking to the ass.manager and had the very same problem of a geyser that was dead.I need a replace